KingkongDC2

Im having problems with my car? when i run my car with 550cc injectors it would bog at 4000 rpm while in neutral reving and when driving it sputters like cazy with my p28 chip, which the chip on it was tune for the 550cc but couldnt get tune because of this situation.when i used my stock injectors with a ebay chip it dont bog or sputter at all? Please help!
MY SETUP:
48ar t3/t4 turbonectic
presicion intercooler
550cc injectors
fuel rail
fuel pressure regulator
255Lp fuel pump
jg intake manifold
greddy boost controller

avotegra

get it tune....that should help alot....or park it away and wait for the tune....dont drive around like that...or with the stock injec...

jdm inc

iTrader: (11)

get and engine management and get it tune.

KingkongDC2

i did try to get it tune but the dude dont know whats wrong with it. it keep sputtering. i have crome.

omiehomie

maybe not getting enough gas?? put the larger injectors back on and take a trip down to the dyno for a tune (towing the caR of course)

avotegra

I dont understand what your saying....the chip that you put on your ecu is chip to run the 550cc. and it sputter...but was tune on the 550cc...did you use the same map sensor that was use to tune the 550cc...you might be running your stock map. but the map that use to tune those 550 is a different map....like a 2.5bar or 3bar or somthing deferent than stock....or the other way around...you know what i mean....

KingkongDC2

Yes I used the same map sensor but still did the same. The guy that tune my car he couldn't get it tune because it was sputtering so he made me a chip to be safe to drive home.

KingkongDC2

any help

TheShodan

iTrader: (14)

THAT IS YOUR HELP... Have the car properly tuned and stop now, while you have a motor.

KingkongDC2

i did take it to get it tune but the tuner didnt know whats wrong!

avotegra

[QUOTE=KingkongDC2;39038277]i did take it to get it tune but the tuner didnt know whats wrong![

so your tuner was tuning it and just give up on it....
or did he just took a look at it and tell you to go home....did he give u a dumb look...

da_dude

Find a different tuner.

jdm inc

iTrader: (11)

^^ I agree find a different tuner sounds like to me he doesnt know what hes really doing if he cant figure out why its sputtering. What ignition are you running?

spooledinurface

How much boost are you running? Do you need resistors for your injectors? If you chipped your car with one of ebay than that your problem should be able to fix with a real tune.